设置后台开机自启动

1. 编辑rc.local服务

sudo vim /lib/systemd/system/rc-local.service

最后面新增几行

[Install]
WantedBy=multi-user.target
Alias=rc-local.service

编辑后的文件如下所示：

#  SPDX-License-Identifier: LGPL-2.1+
#
#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

# This unit gets pulled automatically into multi-user.target by
# systemd-rc-local-generator if /etc/rc.local is executable.
[Unit]
Description=/etc/rc.local Compatibility
Documentation=man:systemd-rc-local-generator(8)
ConditionFileIsExecutable=/etc/rc.local
After=network.target

[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
RemainAfterExit=yes
GuessMainPID=no

[Install]
WantedBy=multi-user.target
Alias=rc-local.service

2. 新建/etc/rc.local文件

sudo vim /etc/rc.local

写入文件如下：

#!/bin/bash
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing. 
# 下面是你想要执行的自启动命令
# 例如：echo hello world
exit 0

sudo chmod +x /etc/rc.local

4. 重启rc.local服务，查看效果

先创建软链接

sudo ln -s /lib/systemd/system/rc-local.service /etc/systemd/system/

再重启服务

sudo systemctl daemon-reload
sudo systemctl restart rc-local

5. 开机自启动

sudo systemctl enable rc-local.service